NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1920
Lab Group #: 8138 Filter Type / Filter Area: MCE 385 mm-
Lab Sample #: 12 Grid Opening Size: 0.01124
Client Sample #: 12 Area Examined: 0.04496 mm^
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 6/17/02
Analysis Performed By:
MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Stnjcture Norv EDS
No (Nonadb
F B C M >=05 p : '=5p Chrys Amphibole Nonasb Ambig/ND
No Coord Elements)
C?
Struct = > 0.5g >5; I Aspect Ratio Grid acceptance:
'Z = Posibve diffraction pattern properties conforming to *5°'^ undissolved filter, overlapped or folded Totals
laboratory -
identirication criteria observed <10% particulate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% F B C M >5m
A- EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
amphiboLes Amphibole
F = Single Fiber Amosite
B = Bundle (<3 libers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
M = Matrix Tremolite
Actinolite Non-ldentified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003387876
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000229751
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